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Posted to hdfs-dev@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2009/10/30 19:31:59 UTC

[jira] Created: (HDFS-744) Support hsync in HDFS

Support hsync in HDFS
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                 Key: HDFS-744
                 URL: https://issues.apache.org/jira/browse/HDFS-744
             Project: Hadoop HDFS
          Issue Type: New Feature
            Reporter: Hairong Kuang


HDFS-731 implements hsync by default as hflush. As descriibed in HADOOP-6313, the real expected semantics should be "flushes out to all replicas and all replicas have done posix fsync equivalent - ie the OS has flushed it to the disk device (but the disk may have it in its cache)." This jira aims to implement the expected behaviour.

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